How many copies did Riichi City - Japanese Mahjong sell?

119k to 194k copies, based on its 5k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Riichi City - Japanese Mahjong make?

Riichi City - Japanese Mahjong is free to play, so there is no copy-sales revenue to estimate.

How big is Riichi City - Japanese Mahjong?

Estimated owners: ≈ 119k–194k; from 5k reviews (Mixed)

A labeled estimate from the public review count (adjusted for release year), not exact sales. Owner data cross-checked with SteamSpy.

Does this actually work?

We left Riichi City - Japanese Mahjong out and predicted the genre from its 8 similar games. Every figure here, including Riichi City - Japanese Mahjong's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 3.8M–7.4M

best case 40.4M (Wallpaper Engine)

Games like Riichi City - Japanese Mahjong

The middle of these games

≈ 3.8M–7.4M copies

≈ $4.6M–$12.2M after Steam's cut

from ~128k reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

All 8 of your similar games are hits.

Best case: Wallpaper Engine at ≈ 30.8M–50.0M copies, ≈ $42.2M–$113.5M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Anime (6 of 8) and Sexual Content (4 of 8).
The winners: Winners here lead with Mature + Utilities, priced around $5. The breakout hits carry Utilities + Software + Design & Illustration; a typical game here doesn't.
The era: The games you compared span 2017 to 2024, and 1 of your 8 shipped in the last two years.

How these numbers were worked out

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

Copies come from each game's reviews times a sales-per-review rate that falls with release age, from about 31 for the most recent game here to about 43 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Doki Doki Literature Club! 2017	Est. copies ≈ 7.8M–12.7M 1.8x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	227k reviews Overwhelmingly Positive	Psychological Horror Visual Novel
MiSide 2024	Est. copies ≈ 3.5M–5.7M SteamSpy 1M–2M	Est. revenue $14.5M–$39.0M after Steam's cut $26.3M–$59.9M before the cut	$14.99	142k reviews Overwhelmingly Positive	Psychological HorrorCute
VRChat 2017	Est. copies ≈ 9.2M–15.0M 2.1x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	268k reviews Mostly Positive	VRFree to Play
Wallpaper Engine 2018	Est. copies ≈ 30.8M–50.0M 7.9x vs typical SteamSpy 20M–50M	Est. revenue $42.2M–$113.5M after Steam's cut $76.8M–$174.6M before the cut	$4.99	1.0M reviews Overwhelmingly Positive	MatureUtilities
Muse Dash 2019	Est. copies ≈ 3.5M–5.7M SteamSpy 2M–5M	Est. revenue $2.9M–$7.8M after Steam's cut $5.3M–$12.0M before the cut	$2.99	122k reviews Very Positive	MusicRhythm
Helltaker 2020	Est. copies ≈ 3.2M–5.2M SteamSpy 2M–5M	Est. revenue Free	Free	128k reviews Overwhelmingly Positive	Free to PlayCute
Mirror 2018	Est. copies ≈ 2.6M–4.2M SteamSpy 2M–5M	Est. revenue $1.4M–$3.8M after Steam's cut $2.5M–$5.8M before the cut	$1.99	84k reviews Overwhelmingly Positive	Sexual ContentNudity
A Dance of Fire and Ice 2019	Est. copies ≈ 2.4M–3.9M SteamSpy 2M–5M	Est. revenue $4.0M–$10.6M after Steam's cut $7.2M–$16.4M before the cut	$5.99	83k reviews Very Positive	RhythmMusic